Siemens LR 460 사용자 설명서
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Page B-78
SITRANS LR 460 – INSTRUCTION MANUAL
7ML19985JM01
m
mmmm
B:
T
ro
u
bl
es
h
o
o
tin
g
Reads empty
when vessel not
empty.
when vessel not
empty.
Reads vessel bottom
through low dK material.
through low dK material.
Increase TVT manually at vessel bottom
region.
Set Far Range to a lower value.
Lower TVT hover level.
region.
Set Far Range to a lower value.
Lower TVT hover level.
Reading
fluctuates.
fluctuates.
Due to solids’ sloped
surfaces some fluctuation
is normal.
surfaces some fluctuation
is normal.
Reduce response rate.
Decrease fill/empty parameter values.
Increase filter time constant in AIFB.
Decrease fill/empty parameter values.
Increase filter time constant in AIFB.
Echo has double
peak/is split
peak/is split
Increase Echo Reform.
Reading is too
slow and lags
behind actual
level change.
slow and lags
behind actual
level change.
Increase response rate.
Turn off Window tracking.
Change fill/empty rate parameter
values.
Increase filter time constant in AIFB.
Turn off Window tracking.
Change fill/empty rate parameter
values.
Increase filter time constant in AIFB.
Device cannot
be programmed
via the
handheld
programmer
be programmed
via the
handheld
programmer
Also make sure that Write Locking is
Off. See
Off. See
You are unable
to modify a
parameter via
remote
communications
to modify a
parameter via
remote
communications
Make sure remote operation is
enabled. See
enabled. See
on page 46. Also make sure
Troubleshooting LR 460 (cont’d)
Symptom
Possible cause
Remedy